package T;


public class Text {
    public static void main(String[] args) {
        TreeNode treeNode = new TreeNode(2,new TreeNode(1),new TreeNode(3));
        System.out.println(treeNode.rangeSum(treeNode,0,10));
        System.out.println(treeNode.rangeSum(treeNode,0,10));
        //System.out.println(treeNode.isValidBST(treeNode));
    }
}
